منابع مشابه
Articulation: brightness, apparent illumination, and contrast ratios.
Luminance edges in the environment can be due to regions that differ in reflectance or in illumination. In three experiments, we varied the spatial organization of 10 achromatic (simulated) surfaces so that some arrangements were consistent with an ecologically valid and parsimonious interpretation of 5 surfaces under two different illuminants. A constant contrast-ratio along a luminance edge i...
متن کاملApparent spatial arrangement and perceived brightness.
The problems of brightness constancy (e.g., the constancy of perceived object color under different illumination conditions), and of the perceptual constancies in general, arise from the fact that changed sensory stimuli frequently elicit unchanged responses (and vice versa) which follow more closely the variations of distal stimuli (objects) than of the sensory-surface stimulus distributions. ...
متن کاملAdaptation to Brightness Change , Contours , Jogging , and Apparent Motion
Stuart Anstis Frisby and Stone (2010) have dubbed adaptation the “psychophysicist’s electrode,” and John Mollon once (1974) famously said, “If it adapts, it’s there.” Psychologists piously hope that their many experiments on visual adaptation will tell physiologists where to look inside the brain. This chapter describes visual adaptation to temporal ramps, spatial edges, and apparent motion (AM...
متن کاملSpatiotemporal averaging of perceived brightness along an apparent motion trajectory.
Objects are critical functional units for many aspects of visual perception and recognition. Many psychophysical experiments support the concept of an "object file" consisting of characteristics attributed to a single object on the basis of successive views of it, but there has been little evidence that object identity influences apparent brightness and color. In this study, we investigated whe...
متن کاملPrecise stellar surface gravities from the time scales of convectively driven brightness variations
A significant part of the intrinsic brightness variations in cool stars of low and intermediate mass arises from surface convection (seen as granulation) and acoustic oscillations (p-mode pulsations). The characteristics of these phenomena are largely determined by the stars' surface gravity (g). Detailed photometric measurements of either signal can yield an accurate value of g. However, even ...
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ژورنال
عنوان ژورنال: Transactions of the Architectural Institute of Japan
سال: 1970
ISSN: 0387-1185,2433-0027
DOI: 10.3130/aijsaxx.178.0_83